January 20, 2010 (PDF) US Airlines Will Generate Millions from Higher Baggage Fees Despite consumer gripes, fee hikes still bring in more revenue.

December 15, 2009 (PDF) Curiouser and Curiouser: the Wonderland of Changes Wrought by BA

October 14, 2009 (PDF) Delta, Alaska Airlines, and Aeroplan Create Solutions for the Reward Availability Problem

September 8, 2009 (PDF) Airlines All Over the Globe Post Big Ancillary Revenue Gains - - 2008 Activity Jumps 345% to €7.68 billion ($10.25 billion)